公开(公告)号：US4727947A

公开(公告)日：1988-03-01

申请号：US11520

申请日：1987-02-05

申请人： Kazufumi Naito

发明人： Kazufumi Naito

IPC分类号： G01G19/32 ,  G01G19/393 ,  G01G23/01 ,  G01G23/16 ,  G01G23/14

CPC分类号： G01G23/01 ,  G01G19/32 ,  G01G19/393 ,  G01G23/163

摘要： A combinational weighing system with a plurality of weighing devices employs at least three central processing units such as microprocessors. One keeps monitoring the weight information from the weighing devices and analyzes stability of weight data. Another one controls the charging and discharging of the weighing devices. The third performs combinational computation to select a combination. The system has increased flexibility regarding operation and adjustments, and allows efficient methods of zero-point and span adjustment of weighing devices. Its compact unitized input-output unit allows the user to operate the system interactively.

摘要翻译： 具有多个称重装置的组合称重系统采用至少三个中央处理单元，例如微处理器。 人们一直在监测称重设备的重量信息，并分析重量数据的稳定性。 另一个控制称重装置的充放电。 第三个执行组合计算以选择组合。 该系统增加了操作和调整的灵活性，并且允许称重装置的零点和跨度调整的有效方法。 其紧凑的单元化输入 - 输出单元允许用户以交互方式操作系统。

公开(公告)号：US4722406A

公开(公告)日：1988-02-02

申请号：US847777

申请日：1986-04-03

申请人： Kazufumi Naito

发明人： Kazufumi Naito

IPC分类号： G01G3/142 ,  G01G19/42 ,  G01G23/01 ,  G01G19/52 ,  G01G3/14

CPC分类号： G01G23/01 ,  G01G19/42 ,  G01G3/142

摘要： An electronic weigher includes a load cell for producing as an output an electric signal proportional to a load, an operational amplifier for amplifying the electric signal produced by the load cell, A/D converter for converting an output signal produced by the operational amplifier into a digital signal, a bias circuit for delivering a dummy signal for test purposes to the operational amplifier, and a switch disposed between the bias circuit and the proportional amplifier for applying the dumy signal to the operational amplifier, wherein amplification circuitry from the operational amplifier to the A/D converter is diagnosed by operating the switch.

摘要翻译： 电子称重器包括用于产生与负载成比例的电信号作为输出的测力传感器，用于放大由测力传感器产生的电信号的运算放大器，用于将由运算放大器产生的输出信号转换成运算放大器的A / D转换器 数字信号，用于将用于测试目的的虚拟信号传送到运算放大器的偏置电路以及设置在偏置电路和比例放大器之间的开关，用于将运算放大器施加该放大信号，其中放大电路从运算放大器到 通过操作开关诊断A / D转换器。

公开(公告)号：US4620178A

公开(公告)日：1986-10-28

申请号：US580690

申请日：1984-02-16

申请人： Kazufumi Naito

发明人： Kazufumi Naito

IPC分类号： G01G23/37 ,  H03M1/00 ,  H03K13/02

CPC分类号： G01G23/3707 ,  H03M1/1047

摘要： A double-integrating A/D converter in which an integrator output voltage, produced by integrating an analog signal input thereto, is reverse-integrated in accordance with a reference voltage having a polarity opposite to that of the analog signal. The time required for the reverse integration is measured in the form of a pulse count by means of a counter. A microcomputer for controlling the counter and a switch which selects the input to the integrator are provided with a software timer function so that the integrating interval of the analog input signal is set at will. The microcomputer also is capable of calculating a digital value, which corresponds to the analog signal, from a count recorded in the counter and from an overflow value indicated by an overflow signal generated by the counter. The signal converted by the A/D converter is capable of being applied to the weighing section of an electronic weigher.

摘要翻译： 一种双积分A / D转换器，其中通过对输入到其上的模拟信号进行积分而产生的积分器输出电压根据与模拟信号的极性相反的参考电压被反向积分。 通过计数器以脉冲计数的形式测量反向积分所需的时间。 用于控制计数器的微计算机和选择对积分器的输入的开关具有软件定时器功能，使得模拟输入信号的积分间隔随意设定。 微计算机还能够从记录在计数器中的计数和由计数器产生的溢出信号所指示的溢出值计算对应于模拟信号的数字值。 由A / D转换器转换的信号能够应用于电子称重器的称重部分。